VB与sql设计代码:PrivateSubButton1_Click(ByValsenderAsSystem.Object,ByValeAsSystem.EventArgs)HandlesButton1.Click'选择普通用户登录IfMe.RadioButton1.CheckedThenDimstrAsStringstr="datasource=PC-201103171305\SQLEXPRESS;database=学生信息库;userid=sa;pwd="DimconA